{"id":10470,"date":"2024-12-27T11:09:23","date_gmt":"2024-12-27T11:09:23","guid":{"rendered":"https:\/\/www.isdin.com\/us\/blog\/?p=10470"},"modified":"2024-12-20T13:48:58","modified_gmt":"2024-12-20T13:48:58","slug":"what-is-transepidermal-water-loss","status":"publish","type":"post","link":"https:\/\/www.isdin.com\/us\/blog\/all\/what-is-transepidermal-water-loss\/","title":{"rendered":"What Is Transepidermal Water Loss and How Does It Affect Your Skin?"},"content":{"rendered":"Reading:<\/span> 4<\/span> minutes<\/span><\/span>\n

You are mostly water. From head to toe, every layer of your skin and every single cell in your body depends on it to function. Water nourishes, revitalizes, and keeps you glowing. So what happens when your skin starts to lose it, and why does it matter?<\/p>\n\n\n\n

Our expert Albert Navasa, ISDIN Corporate Medical Affairs Specialist,<\/strong> has the answers. Today, he\u2019s explaining everything you need to know about transepidermal water loss (TEWL),<\/strong> how it impacts your skin, and why a hydration boost might be the key to healthier, happier skin.<\/p>\n\n\n\n

What is transepidermal water loss?<\/h2>\n\n\n\n

While it might sound technical, TEWL is simply a natural process where water evaporates from the surface of your skin. It\u2019s also a key indicator of how well your skin barrier<\/a> is working. Your body is about 60% water, and nearly a third of that is in your skin \u2014 your body\u2019s largest organ. Every day, a bit of that water is lost through TEWL.<\/p>\n\n\n\n

Albert explains: \u201cThis process refers to the amount of water that evaporates from the top layer of the skin, known as the stratum corneum.\u201d The stratum corneum \u2014 your skin\u2019s outermost layer<\/a> \u2014 acts like a shield, keeping moisture in and protecting you from external stressors<\/a>.<\/p>\n\n\n\n

\"What<\/figure>\n\n\n\n

<\/p>\n\n\n\n

Why does TEWL happen?<\/h2>\n\n\n\n

Your skin is always interacting with the air around you, and that air has different humidity levels depending on where you are. To balance things out, water on your skin\u2019s surface evaporates. As Albert says, \u201cTEWL is completely natural and unavoidable.\u201d<\/p>\n\n\n\n

The idea is to keep this process in check because some factors can speed it up, leaving your skin dry and dehydrated. Albert shares what can cause excessive water loss:<\/p>\n\n\n\n